Stockholders' Equity and Non-controlling Interests - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Aug. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 15, 2015
Stockholders’ Equity and Non-controlling Interests
Increase in number of authorized shares	30,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	38,500,000
Payments for repurchase of shares		$ 22,003	$ 20,598	$ 10,000
Share repurchase
Stockholders’ Equity and Non-controlling Interests
Shares repurchased (in shares)		3,523,509
Shares repurchased, weighted average price (in dollars per share)		$ 6.24
Payments for repurchase of shares		$ 22,000
Number of shares that can be repurchased (in shares)		1,000,000
Share repurchase | Series B Preferred Stock [Member]
Stockholders’ Equity and Non-controlling Interests
Shares repurchased (in shares)		41,528
Shares repurchased, weighted average price (in dollars per share)		$ 21.60
Payments for repurchase of shares		$ 900
Maximum | Share repurchase
Stockholders’ Equity and Non-controlling Interests
Amount approved for share repurchase program					$ 25,000